Refractory brick units



Nov. 1, 1966 J. P. WALT 3,282,231

REFRACTORY BRICK UNITS Filed July 26, 1965 22 Fig. 4

INVENTOR. Pg 3 JOHN E WALT 4 T7 GENE Y United States Patent Ofifice 3,282,231 Patented Nov. 1, 1966 3,282,231 REFRACTORY BRICK UNITS .Iolm 1?. Walt, Chicago, Ill., assignor to Harbison-Walker Refractories Company, Pittsburgh, Pa., a corporation of Pennsylvania Filed July 26, 1965, Ser. No. 474,737 7 Claims. (Cl. 110-99) This invention relates to brick or block used for building the walls and roofs of industrial furnaces and, more particularly, to the means for fastening such blocks to hangers or other support structure.

It is customary to suspend brick in a flat furnace roof of the open hearth type from hangers. In arched roofs where hangers are not used for supporting all of the brick, at least some brick thereof usually are suspended by hanger'rneans. Additionally, in arch-type roofs where hangers are not use initially, hangers sometimes are empioyed when brick are inserted for patching purposes.

There have been many diverse designs and arrangements suggested for suspending furnace roof brick. Prior hangers have included such as sheet metal tabs of various configurations, metal clips, wire, and bent rods, for example. Specially designed hook-type devices which can be characterized as inverted T-shaped have also been suggested and used.

Such prior hanger arrangements usually have been associated with means which are comolded with the brick body; for example, in my United States Patent No. 3,068,813, a receptacle is provided at the cold end of the brick arranged to receive a threaded rod or else arranged for a wedge fit with a rod. United States Patent No. 2,982,237 teaches inclusion of a metal plate having an apertured end portion which extends beyond the cold face of the brick.

United States Patent No. 2,840,017 teaches comolding of metal plates into the cold face of a brick, which plates are apertured to receive a bent rod. United States Patents 1,624,386 and 1,703,656 teach comolding rods or wires in the brick material, which rods are arranged to be bent for suspending the brick. United States Patent No. 2,398,622 is another example of comolding of a bent rod with a brick or block for suspension. This patent is also an example of a very early teaching of comolding a reinforcing plate internally of a chemically bonded brick.

It is a primary object of this invention to provide a simplified hanger construction for either chemically bonded or burned basic refractory brick. The brick can include, in the case of the chemically-bonded ones, internal reinforcing plates of the type shown in United States Patent No. 2,398,622, or U-shaped reinforcing members of the type shown, for example, in United States Patent No. 3,029,755.

A preferred embodiment of the invention is illustrated in the accompanying drawings. A study of these drawings and the following detailed description will make obvious other features and advantages of brick construction according to this invention. In these drawings:

FIG. 1 is a perspective view of a metal-encased refractory brick according to this invention;

FIG. 2 is a front elevation of the brick of FIG. 1 with the outer case removed;

FIG. 3 is a side elevation of the arrangement of FIG. 2; and

FIG. 4 is a top View of the brick of FIGS. 2 and 3 with my hanger device removed.

Before describing the drawings in detail, it should be understood they are but exemplary of hanger construction according to the concepts of this invention, and that the true measure of the spirit and scope of this invention is as defined in the hereafter appended claims.

In the drawings, there is shown a metal-encased composite brick assembly according to the concepts of this invention. It is comprised of refractory brick encased within a pair of overlapping U-shaped case elements 10 and 11. Adjacent the cold face 12 of the refractory body is a bent rod hanger 13 according to this invention. This bent rod 13 is maintained in position within the brick body by its lower extremities which frictionally engage complementary depressions in the brick body, and by the outer case section 11.

The configuration of the bent rod 13 and its cooperation with brick 20 is more clearly shown in FIGS. 2 and 3. The bent rod 13 is comprised of a downwardly-opening, generally U-shaped section 14 interconnected with outwardly diverging legs 15, which legs terminate in bent feet 16. The U-shaped section 14 is preferably characterized by a substantially flat top section 14A interconnected at substantially right angles with the side members 143. These side members 14B outwardly diverge to form the legs 15. Note that the bend or start of divergence is substantially even with the cold face of the brick in which the hanger is inwrted. The legs 15 and feet 16 are encompassed Within grooves or slots formed in the brick body, which grooves or slots are of sufiicient depth as to allow placement of the metal cases about the brick with internal surfaces thereof substantially flush to the face 21 of the brick in which the hanger 13 is inserted.

In FIGS. 2 and 4 a first groove or slot 22 is shown. This groove is substantially in the form of a truncated triangle in cross-section. The slope of the side walls of the groove conform to the slope of the legs 15 of the hanger. The back wall is preferably flat and perpendicular to the cold face to assure proper positions of hanger 13. The dimensions of the groove 22 are such that the legs 15 must be slightly compressed when being inserted, whereby the legs 15 frictionally engage the side surfaces of the slot or depression 22. The vertical bisector of the groove 22 is perpendicular to the cold face 12, whereby the hanger member 13 projects normally from the cold face. Across the base of the groove 22 is an elongate slot 23. This slot receives the inwardly-extending feet 16 of the hanger member. The slot 23 is of sufficient depth to receive the feet 16 and allow the legs 15 to abut the rear face 24 of the groove 22. The top and bottom faces or walls which define the groove 22 are preferably parallel to the cold face. A desirable modification is to have the groove 22 slope upwardly from its opening through the brick face in which it is formed to thereby better hold the feet 16 of the hanger. Yet further, there can be two spaced, separate depressions for frictionally receiving the legs 15 and two grooves of holes, one for each foot 16, instead of the elongate configuration shown in the drawings.

Having thus described the invention in detail and with sufficient particularity as to enable those skilled in the art to practice it, what is desired to have protected by letters patent is set forth in the following claims:

I claim:

1. A roof brick having a hot face and an opposed cold face with four sides extending between said hot face and cold face, an outwardly diverging generally truncated triangular depression formed through a side of said brick from said cold face to a position above the hot face, said truncated triangular depression terminating in an inwardly extending slot which extends into the body of the brick beyond said depression, a bent rod, said bent rod including an upper, downwardly-opening generally U-shaped first section terminating in outwardly-diverging legs, said legs terminating in inwardly-bent feet, said legs arranged to frictionally engage opposed side surfaces which in part define said depression, and the feet of said rod extending into and being encompassed by said slot, and metal cas- 3 ing attached to said brick arranged to hold said bent rod in position.

2. The brick of claim 1 in which said slot slopes upwardly towards the cold face.

3. The brick of claim 1 in which said slot is substantially parallel to the cold face.

4. A roof shape having a hot face and a cold face with four sides extending between said hot face and cold face, an outwardly-diverging generally truncated triangular depression formed through a side of said shape from said cold face to a position above the hot face, said truncated triangular depression terminating in an inwardly-extending slot which extends into the body of the brick beyond said depression, a bent rod, said bent rod including an upper, downwardly-opening, generally U-shaped first section which terminates in outwardly-diverging legs, said legs terminating in inwardly-bent feet, said legs arranged to frictionally engage opposed side surfaces which in part define said depression, and the feet of said rod extending into and being encompassed by said slot, and metal casing attached to said brick arranged to hold said bend rod in position.

5. The shape of claim 4 in which the downwardlyopening U-shaped section is characterized by having a substantially flat first section from the ends of which unidirectionally extend a pair of substantially parallel arms, which arms are substantially perpendicular to the cold face.

6. The shape of claim 4 in which the points of divergence of said legs from said U-shaped section are below the plane of said cold face.

7. The shape of claim 6 in which said points of divergence are substantially continguous the plane of the cold face.

References Cited by the Examiner UNITED STATES PATENTS 1,076,240 10/ 1913 Schuffenhauer. 2,991,736 7/1961 Kivala et a1 -99 3,175,656 3/1965 Schoenfeld 52-484 X 3,234,703 2/ 1966 Sullivan 11099 X FOREIGN PATENTS 1,121,563 5/1956 France. 1,154,239 9/1963 Germany.

56,074 5/ 1911 Switzerland.

FREDERICK L. MATIESON, 111., Primary Examiner.

R. A. DUA, Assistant Examiner. 

1. A ROOF BRICK HAVING A HOT FACE AND AN OPPOSED COLD FACE WITH FOUR SIDES EXTENDING BETWEEN SAID HOT FACE AND COLD FACE, AN OUTWARDLY DIVERGING GENERALLY TRUNCATED TRIANGULAR DEPRESSION FORMED THROUGH A SIDE OF SAID BRICK FROM SAID COLD FACE TO A POSITION ABOVE THE HOT FACE, SAID TRUNCATED TRIANGULAR DEPRESSION TERMINATING IN AN INWARDLY EXTENDING SLOT WHICH EXTENDS INTO THE BODY OF THE BRICK BEYOND SAID DEPRESSION, A BENT ROD, SAID BENT ROD INCLUDING AN UPPER, DOWNWARDLY-OPENING GENERALLY U-SHAPED FIRST SECTION TERMINATING IN OUTWARDLY-DIVERGING LEGS, SAID LEGS TERMINATING IN INWARDLY-BENT FEET, SAID LEGS ARRANGED TO FRICTIONALLY ENGAGE OPPOSED SIDE SURFACES WHICH IN PART DEFINE SAID DEPRESSION, AND THE FEET OF SAID ROD EXTENDING INTO AND BEING ENCOMPASSED BY SAID SLOT, AND METAL CASING ATTACHED TO SAID BRICK ARRANGED TO HOLD SAID BENT ROD IN POSITION. 